Ratchet lock



FIG. 1 is a front perspective view of a ratchet lock showing the new design;

FIG. 2 is a front view of the lock of FIG. 1;

FIG. 3 is a rear view of the lock of FIG. 1;

FIG. 4 is a top view of the lock of FIG. 1;

FIG. 5 is a bottom view of the lock of FIG. 1;

FIG. 6 is a left side view of the lock of FIG. 1; and,

FIG. 7 is a right side view of the lock of FIG. 1.

In the drawings, the broken lines depict portions of the ratchet lock that form no part of the claim. 

CLAIM We claim the ornamental design for a ratchet lock, as shown and described. 